CN101902280B - Self-contained MAC Ethernet passive optical network terminal SFP - Google Patents
Self-contained MAC Ethernet passive optical network terminal SFP Download PDFInfo
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- CN101902280B CN101902280B CN2010102483268A CN201010248326A CN101902280B CN 101902280 B CN101902280 B CN 101902280B CN 2010102483268 A CN2010102483268 A CN 2010102483268A CN 201010248326 A CN201010248326 A CN 201010248326A CN 101902280 B CN101902280 B CN 101902280B
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Abstract
The invention discloses a passive optical network terminal which relates to the Ethernet passive optical network (EPON) technology. The novel passive optical network terminal integrates a photoelectric conversion circuit of a common optical network terminal and an MAC protocol processing circuit of the passive optical network into an SFP package. The self-contained MAC Ethernet passive optical network terminal SFP is characterized by comprising an optical transceiver BOSA (1), a laser driver LDD (3-1), a limiting amplifier LA (3-2), a PON protocol chip and peripheral circuit (4), an Ethernet serial parallel conversion chip SERDES (5), and a control unit MCU (2). The invention mainly protects the idea of integrating a common photoelectric conversion optical module and a PONMAC chip in the SFP package and realizes the circuit.
Description
Technical field
The invention discloses a kind of passive light network terminal that relates to Ethernet passive optical network (EPON) technology, this novel passive light network terminal is integrated into the photoelectric switching circuit of the normal optical network terminal and the MAC protocol treatment circuit of EPON in the SFP encapsulation.
Background technology
Along with the demand of data service to bandwidth constantly increases, these application comprise high definition IPTV broadcasting and multimedia delivery system etc., and the EPON technology has obtained using widely.Main application structure is shown in Figure 1, and local side OLT is received respectively on the ONT box through optical branching device, and the ONT box provides network interface or optical fiber interface according to the requirement of subscriber exchange.Subscriber exchange has designed the SFP socket, the SFP module of optional insertion electricity mouthful SFP or opto-electronic conversion.
Write a Chinese character in simplified form explanation:
（ONT Optical?Network?Termination）；
（SFP Small?Form?Factor?Pluggable）；
（MAC Media?Access?Control）；
（OLT Optical?Line?Termination）；
（EPON Ethernet?Passive?Optical?Networks）；
This application structure of Fig. 1 has been utilized existing switching equipment preferably, but has increased the supply line of wiring and ONT box when mounted, and switch can't manage the ONT box, and to the temperature of ONT, performances such as sending and receiving luminous power are monitored.
Summary of the invention
The present invention has overcome difficulty and the shortcoming in the existing application technology, and the Ethernet passive optical network terminal SFP of a kind of MAC of carrying is provided.The present invention can be simplified to Fig. 2 from Fig. 1 with the network layout structure, only needs the SFP module in the switch socket is replaced with product of the present invention.
Technical scheme of the present invention is as shown in Figure 3: comprise optical transceiver BOSA, laser driver LDD, limiting amplifier LA, PON protocol chip and peripheral circuit, Ethernet string and conversion chip SERDES, control unit MCU.Aforementioned lights transceiver BOSA, laser driver LDD, limiting amplifier LA, PON protocol chip and peripheral circuit, Ethernet string and conversion chip SERDES, control unit MCU is a whole body structure.
In sum, owing to adopted technique scheme, the invention has the beneficial effects as follows: need not other power supply, and can accomplish temperature, voltage, received optical power, numerical diagnostic monitoring functions such as transmitting optical power in this locality.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is for shown in the main application structure of existing EPON technology.
Fig. 2 is for using sketch map with the network layout structure from the present invention that Fig. 1 simplifies.
Fig. 3 is a technical scheme sketch map of the present invention.
Embodiment
Disclosed all characteristics in this specification, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this specification (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
In case study on implementation of the present invention, can be divided into two part circuit, a part of and common ONT opto-electronic conversion optical module identical (in the frame of broken lines) comprises optical transceiver (BOSA), laser driver (LDD), limiting amplifier (LA) and main control unit (MCU).The built-in back facet current of optical transmitter detects, the luminous luminous power and the laser bias current of laser driver monitoring laser; Limiting amplifier is integrated optical receiver bias voltage interface, the monitoring received optical power.Limiting amplifier also can carry out chip temperature, the monitoring of operating voltage simultaneously.Main control unit (MCU) is accomplished the management to LDD and LA through the SPI interface, reads above-mentioned 5 digital diagnostic monitoring values, deposits internal register in, and provides the I2C interface to supply the outside to read.The externally main signal of this part circuit connects the signal (see figure 3), and TX_BURST is a laser burst enable signal, and TX_FAULT is the laser fails alarm, and Los is the alarm that receiving optical signals is lower than threshold value, and TX_DIS is a signal of forcing to close laser.
In case study on implementation of the present invention, second circuit comprises PON protocol chip and peripheral circuit, Ethernet string and conversion chip (SERDES).PON MAC CHIP accomplishes the processing of EPON agreement IEEE 802.3ah, and built-in PON SERDES directly exports high-speed differential signal to LDD, and receives the high-speed differential signal that LA sends here.Peripheral circuit includes but not limited to clock, memory circuitry etc.And be the TBI interface between Ethernet string and the conversion chip (SERDES), SERDES accomplishes string and conversion is exported and the input high-speed differential signal to the SFP interface.
The ONT cassette interior adopts common ONT optical module, and this ONT optical module is as shown in the frame of broken lines among Fig. 3, and up direction LDD drives high speed signal, and BOSA converts the output of 1310nm light signal to; Down direction BOSA converts the 1490nm light signal of OLT output to the signal of telecommunication, the output high-speed-differential signal of telecommunication after LA amplifies.PON MAC chip is the PON protocol processes chip in the ONT box, and optional string of its second line of a couplet mouth and conversion chip, or Ethernet switch provide single port or many mouthfuls of Ethernet interfaces downwards.
Patent of the present invention provides the Ethernet passive optical network terminal SFP of a kind of MAC of carrying, and main protection is integrated in conception and circuit realization in the SFP encapsulation with common photoelectric conversion optical module and PON MAC chip.SFP module provided by the invention can read the DDM data through the I2C interface of SFP standard, the performance of monitoring optical module.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (4)
1. an Ethernet passive optical network terminal SFP who carries MAC is characterized in that: comprise optical transceiver BOSA (1), laser driver LDD (3-1), limiting amplifier LA (3-2), PON protocol chip and peripheral circuit (4), Ethernet string and conversion chip SERDES (5), control unit MCU (2);
Optical transceiver BOSA (1), laser driver LDD (3-1), limiting amplifier LA (3-2) and control unit MCU (2) belong to the opto-electronic conversion optical module; Opto-electronic conversion optical module and PON protocol chip and peripheral circuit (4) are integrated in the SFP encapsulation;
Down direction BOSA converts the 1490nm light signal of OLT output to the signal of telecommunication, the output high-speed-differential signal of telecommunication after LA amplifies, and said PON protocol chip and peripheral circuit (4) receive the high-speed differential signal that said limiting amplifier LA (3-2) sends here; Said PON protocol chip and peripheral circuit (4) are accomplished the processing of EPON agreement IEEE 802.3ah; Directly export high-speed differential signal to said laser driver LDD (3-1); Up direction LDD drives high speed signal, and BOSA converts the output of 1310nm light signal to;
Between said PON protocol chip and peripheral circuit (4) and said Ethernet string and the conversion chip SERDES (5) is the TBI interface, and said Ethernet string and conversion chip SERDES (5) accomplish string and conversion is exported and the input high-speed differential signal to the SFP interface.
2. the Ethernet passive optical network terminal SFP that carries MAC according to claim 1 is characterized in that: aforementioned lights transceiver BOSA (1), laser driver LDD (3-1), limiting amplifier LA (3-2), PON protocol chip and peripheral circuit (4), Ethernet string and conversion chip SERDES (5), control unit MCU (2) are whole body structures.
3. the Ethernet passive optical network terminal SFP that carries MAC according to claim 1 and 2; It is characterized in that: the built-in back facet current of said optical transmitter BOSA (1) detects, the luminous luminous power and the laser bias current of said laser driver LDD (3-1) monitoring laser; Said limiting amplifier LA (3-2) is integrated optical receiver bias voltage interface, the monitoring received optical power; Said limiting amplifier LA (3-2) carries out the monitoring of chip temperature, operating voltage simultaneously; Said control unit MCU (2) accomplishes the management to said laser driver LDD (3-1) and said limiting amplifier LA (3-2) through the SPI interface, reads the numerical diagnostic monitor value, deposits internal register in, and provides the I2C interface to supply the outside to read; TX_BURST is a laser burst enable signal, and TX_FAULT is the laser fails alarm, and Los is the alarm that receiving optical signals is lower than threshold value, and TX_DIS is a signal of forcing to close laser.
4. the Ethernet passive optical network terminal SFP that carries MAC according to claim 1 and 2 is characterized in that: the peripheral circuit in said PON protocol chip and the peripheral circuit (4) comprises clock, memory circuitry.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102483268A CN101902280B (en) | 2010-08-09 | 2010-08-09 | Self-contained MAC Ethernet passive optical network terminal SFP |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102483268A CN101902280B (en) | 2010-08-09 | 2010-08-09 | Self-contained MAC Ethernet passive optical network terminal SFP |
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| CN101902280A CN101902280A (en) | 2010-12-01 |
| CN101902280B true CN101902280B (en) | 2012-12-26 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255661A (en) * | 2011-06-10 | 2011-11-23 | 武汉长光科技有限公司 | Subminiature programmable optical communication module for intelligent power grid |
| CN103647605B (en) * | 2011-06-14 | 2017-01-11 | 苏州旭创科技有限公司 | SFP + optical module |
| US9354411B2 (en) * | 2012-10-22 | 2016-05-31 | Corning Optical Communications LLC | Receiver optical assemblies (ROAs) having photo-detector remotely located from transimpedance amplifier, and related components, circuits, and methods |
| CN103188014A (en) * | 2013-04-12 | 2013-07-03 | 深圳市共进电子股份有限公司 | PON (passive optical network) ONU (optical network unit) BOB (BOSA-on-board) product with test loop |
| CN103281601A (en) * | 2013-06-17 | 2013-09-04 | 苏州优康网络电子商务有限公司 | Passive optical network equipment |
| CN103326236B (en) * | 2013-06-19 | 2014-03-26 | 华中科技大学 | Semiconductor laser unit modulating and driving system |
| CN105207732A (en) * | 2015-08-24 | 2015-12-30 | 索尔思光电（成都）有限公司 | 10G bit passive optical network terminal SFP+ with MAC |
| CN106549706B (en) * | 2015-09-16 | 2019-04-26 | 青岛海信宽带多媒体技术有限公司 | A kind of electrical port module |
| CN105406920B (en) * | 2015-10-30 | 2018-06-26 | 武汉光迅科技股份有限公司 | A kind of optical module for supporting gigabit Ethernet protocol processes |
| CN105490745B (en) * | 2015-11-25 | 2018-12-07 | 上海市共进通信技术有限公司 | Passive optical network SFP module and its application method based on LED light |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075853A (en) * | 2007-06-26 | 2007-11-21 | 上海大学 | Optical network unit of Ethernet passive optical network |
| CN201282466Y (en) * | 2008-10-24 | 2009-07-29 | 青岛海信宽带多媒体技术股份有限公司 | Optical module |
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2010
- 2010-08-09 CN CN2010102483268A patent/CN101902280B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075853A (en) * | 2007-06-26 | 2007-11-21 | 上海大学 | Optical network unit of Ethernet passive optical network |
| CN201282466Y (en) * | 2008-10-24 | 2009-07-29 | 青岛海信宽带多媒体技术股份有限公司 | Optical module |
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| CN101902280A (en) | 2010-12-01 |
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